Fuel injector testing device and method

Details Fuel injector testing device and method Fuel injector testing device and method

1987-08-04

1988-12-06

Myracle, Jerry W.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

G01M 1500

Patent

active

047888580

ABSTRACT:
Method and apparatus for the determination of the fuel flow condition of a fuel injector while the fuel injector is in its operative position in an engine are described. The device comprises a liquid reservoir, a measuring chamber for the liquid and a conduit to flow the liquid through the chamber to the injector under constant pressure, as well as electric circuitry to open and close the injector for at least one predetermined time interval. The chamber is refillable from the reservoir to a predetermined liquid level after each use. The liquid can be passed through the injector in short repeated bursts or in more prolonged flows. Comparison of the volume of liquid passing through the subject fuel injector in a given time period with the volume of a like liquid passed through a reference fuel injector in the same time period is indicative of the fuel flow condition of the subject fuel injector. The invention is applicable to fuel injectors on many types of stationary and vehicular engines, and is particularly applicable to the testing of automotive fuel injection systems.

REFERENCES:
patent: 3216622 (1965-11-01), Drostholm
patent: 4520773 (1985-06-01), Koslow
1985 Oldsmobile Chassis Service Manual, vol. II, pp. 6E-130 to 6E-133, 6E-188 to 6E-191 and 6E-202 to 6E-203 (10/01/84).

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